An intelligent method for generating optimal screw path for pedicle surgery guide plate

Abstract

The invention provides a pedicle operation guide plate optimal screw placement path intelligent generation method. The method comprises the steps: S1, a two-dimensional CT scanning image for vertebrais acquired; S2, according to the two-dimensional CT scanning image, a closed three-dimensional network model for the vertebra is rebuilt in a three-dimensional mode, and a closed curved surface is formed; S3, a vertebra screw placement path set optimal model with the optimal length as a target is built; and S4, the set optimal model is solved by using a Lagrange multiplier method, and the optimalscrew placement path is acquired. According to the pedicle screw placement path generation method provided by the invention, the automatic optimal screw placement path generation problem is solved, and as for a given vertebra three-dimensional digital geometric model, based on the user requirements, on the premise of ensuring the operation safety, the longest screw placement path can be generatedautomatically.

Description

Technical field [0001] The invention relates to the field of medicine, in particular to an intelligent generation method for optimal nail placement of a pedicle surgical guide. Background technique [0002] In the treatment of spondylolisthesis, reduction, spinal reinforcement, and other operations, pedicle screw internal fixation is generally used, but because the inherent anatomical structure of the pedicle is relatively narrow, and its surrounding is adjacent to important anatomical structures such as blood vessels, nerves, and spinal cord, It is very important to accurately implant a pedicle screw of appropriate length. If the length and position of the implanted pedicle screw are greatly deviated, it will damage the adjacent important tissue structures and cause serious complications. Therefore, the generation method of pedicle screw placement is the key to various spinal operations. [0003] However, at present, the main methods of generating nail passages for pedicle surger...

AI Technical Summary

Problems solved by technology

Anatomical landmark method, the traditional generation method takes a long time and a lot of energy, and the angle of screw entry is mainly judged by the experience of the operator, to be precise, it depends on the feel of the operator and the alignment of the pedicle probe. Probing the screw insertion channel to ensure the accurate placement of pedicle screws requires high clinical experience of doctors, and the accuracy is difficult to guarantee

X-ray fluoroscopy-assisted method, the operation time is longer and it is easy to aggravate the patient's condition. A large number of X-rays will also cause secondary damage to the patient and miss the best treatment time.

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